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All results from a given calculation for CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-7795.246474
Energy at 298.15K-7795.258360
HF Energy-7794.581406
Nuclear repulsion energy976.838893
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3090 2937 2.39      
2 A1 1452 1380 11.41      
3 A1 1091 1037 4.84      
4 A1 425 404 4.25      
5 A1 224 213 0.02      
6 A2 357 339 0.00      
7 E 3195 3036 2.17      
7 E 3195 3036 2.17      
8 E 1513 1438 4.50      
8 E 1513 1438 4.50      
9 E 1126 1070 48.44      
9 E 1126 1070 48.44      
10 E 666 633 71.33      
10 E 666 633 71.33      
11 E 290 276 1.35      
11 E 290 276 1.35      
12 E 156 148 0.01      
12 E 156 148 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10265.4 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9755.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-311G*
ABC
0.03538 0.03538 0.02097

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.444
C2 0.000 0.000 1.961
Br3 0.000 1.845 -0.204
Br4 1.597 -0.922 -0.204
Br5 -1.597 -0.922 -0.204
H6 0.000 -1.029 2.325
H7 0.891 0.514 2.325
H8 -0.891 0.514 2.325

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51751.95491.95491.95492.14452.14452.1445
C21.51752.84432.84432.84431.09141.09141.0914
Br31.95492.84433.19493.19493.82802.99322.9932
Br41.95492.84433.19493.19492.99322.99323.8280
Br51.95492.84433.19493.19492.99323.82802.9932
H62.14451.09143.82802.99322.99321.78221.7822
H72.14451.09142.99322.99323.82801.78221.7822
H82.14451.09142.99323.82802.99321.78221.7822

picture of 1,1,1-tribromoethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.478 C1 C2 H7 109.478
C1 C2 H8 109.478 C2 C1 Br3 109.346
C2 C1 Br4 109.346 C2 C1 Br5 109.346
Br3 C1 Br4 109.597 Br3 C1 Br5 109.597
Br4 C1 Br5 109.597 H6 C2 H7 109.465
H6 C2 H8 109.465 H7 C2 H8 109.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability